Uwe Stöhr wrote: >> I find them very useful when I don't like >> the default sizes TeX uses in fractions, for example. > > Better use the commands \cfrac, \tfrac, etc. in this case. > >> I would not use >> them simply for changing the limits style. > > But this is not the intention of these commands, they are there to > change the style (size and spacings) of whole math constructs and not > only parts of it. Therefore there are commands like \cfrac and \nolimits. > > Herbert, what is your interpretion of this issue?
the font size has a dynamic character inside math, which is the reason why it makes only sense to use the style commands. Which font size a style will use depends to the environment. As Enrico pointed out, a fraction can be of displaystyle or scriptstyle and an index scriptstyle or scriptscriptstyle. Buttons in math should change only the style, and the fontsize depends on it. Herbert
